Drinking water in 25336
For this postcode Stadtwerke Elmshorn publishes several supply zones. Which of them serves an individual address is not published — below are the values of the zone with the most documented parameters, the remaining 1 underneath.
How to read the share of the parametric value
Several samples per year: for chemical parameters the mean value is given, for microbiological ones the highest measured value. There the parametric value is zero — a single finding would disappear in the average, and it is precisely that finding which is the information. Which reference applies is stated in the last column of the table.
Köhnholz
Stadtwerke ElmshornAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 4,2 mg/l | 50 mg/l | 8 % | Single value · Köhnholz |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value · Köhnholz |
| Sulphate | 86 mg/l | 250 mg/l | 34 % | Single value · Köhnholz |
| Sodium | 21 mg/l | 200 mg/l | 11 % | Single value · Köhnholz |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Show all recorded parameters (25 — most recent value per parameter)
Chemical parameters (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Cadmium | <0,0003 mg/l below limit of quantification | 3 µg/l | < 10 % * | Single value · Köhnholz |
| Copper | <0,0010 mg/l below limit of quantification | 2 mg/l | < < 0.1 % * | Single value · Köhnholz |
| Fluoride | <0,15 mg/l below limit of quantification | 1.5 mg/l | < 10 % * | Single value · Köhnholz |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value · Köhnholz |
| Nitrate | 4,2 mg/l | 50 mg/l | 8 % | Single value · Köhnholz |
| Nitrite | 0,021 mg/l | 0.5 mg/l | 4 % | Single value · Köhnholz |
| Polycyclic aromatic hydrocarbons | <0,00005 mg/l below limit of quantification | 0.1 µg/l | < 50 % * | Single value · Köhnholz |
| Uranium | 0,0005 mg/l | 10 µg/l | 5 % | Single value · Köhnholz |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Indicator parameters (10)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Single value · Köhnholz |
| Chloride | 37 mg/l | 250 mg/l | 15 % | Single value · Köhnholz |
| Conductivity (25 °C) | 661 µs/cm | 2,790 µS/cm | — | Single value · Köhnholz |
| Iron | <0,050 mg/l below limit of quantification | 0.2 mg/l | < 25 % * | Single value · Köhnholz |
| Manganese | < 0,01 mg/l below limit of quantification | 50 µg/l | < 20 % * | Single value · Köhnholz |
| pH | 7,4 | 6,5–9,5 | — | Single value · Köhnholz |
| Sodium | 21 mg/l | 200 mg/l | 11 % | Single value · Köhnholz |
| Sulphate | 86 mg/l | 250 mg/l | 34 % | Single value · Köhnholz |
| Temperature | 10,4 °C | — | — | Single value · Köhnholz |
| Total organic carbon (TOC) | 4,8 mg/l | ohne anormale Veränderung | — | Single value · Köhnholz |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Further parameters (7)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 80 mg/l | — | — | Single value · Köhnholz |
| Carbonate hardness | 7,7 °dH | — | — | Single value · Köhnholz |
| Hardness range (WRMG) | Mittel | — | — | Single value · Köhnholz |
| Hydrogen carbonate | 167 mg/l | — | — | Single value · Köhnholz |
| Magnesium | 5,8 mg/l | — | — | Single value · Köhnholz |
| Potassium | 7,3 mg/l | — | — | Single value · Köhnholz |
| Total hardness | 2,2 mol/m³ | — | — | Single value · Köhnholz |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Show 1 more supply zone in this postcode
Nibelungenring
Stadtwerke ElmshornAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 1,4 mg/l | 50 mg/l | 3 % | Single value · Nibelungenring |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value · Nibelungenring |
| Sulphate | 63 mg/l | 250 mg/l | 25 % | Single value · Nibelungenring |
| Sodium | 50 mg/l | 200 mg/l | 25 % | Single value · Nibelungenring |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Show all recorded parameters (25 — most recent value per parameter)
Chemical parameters (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Cadmium | <0,0003 mg/l below limit of quantification | 3 µg/l | < 10 % * | Single value · Nibelungenring |
| Copper | 0,0024 mg/l | 2 mg/l | 0.1 % | Single value · Nibelungenring |
| Fluoride | 0,18 mg/l | 1.5 mg/l | 12 % | Single value · Nibelungenring |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value · Nibelungenring |
| Nitrate | 1,4 mg/l | 50 mg/l | 3 % | Single value · Nibelungenring |
| Nitrite | 0,015 mg/l | 0.5 mg/l | 3 % | Single value · Nibelungenring |
| Polycyclic aromatic hydrocarbons | <0,00005 mg/l below limit of quantification | 0.1 µg/l | < 50 % * | Single value · Nibelungenring |
| Uranium | <0,000050 mg/l below limit of quantification | 10 µg/l | < 0.5 % * | Single value · Nibelungenring |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Indicator parameters (10)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,01 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Single value · Nibelungenring |
| Chloride | 96 mg/l | 250 mg/l | 38 % | Single value · Nibelungenring |
| Conductivity (25 °C) | 819 µs/cm | 2,790 µS/cm | — | Single value · Nibelungenring |
| Iron | <0,050 mg/l below limit of quantification | 0.2 mg/l | < 25 % * | Single value · Nibelungenring |
| Manganese | <0,01 mg/l below limit of quantification | 50 µg/l | < 20 % * | Single value · Nibelungenring |
| pH | 7,6 | 6,5–9,5 | — | Single value · Nibelungenring |
| Sodium | 50 mg/l | 200 mg/l | 25 % | Single value · Nibelungenring |
| Sulphate | 63 mg/l | 250 mg/l | 25 % | Single value · Nibelungenring |
| Temperature | 10,6 °C | — | — | Single value · Nibelungenring |
| Total organic carbon (TOC) | 4,8 mg/l | ohne anormale Veränderung | — | Single value · Nibelungenring |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Further parameters (7)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 110 mg/l | — | — | Single value · Nibelungenring |
| Carbonate hardness | 12 °dH | — | — | Single value · Nibelungenring |
| Hardness range (WRMG) | Hart | — | — | Single value · Nibelungenring |
| Hydrogen carbonate | 261 mg/l | — | — | Single value · Nibelungenring |
| Magnesium | 4,8 mg/l | — | — | Single value · Nibelungenring |
| Potassium | 2,3 mg/l | — | — | Single value · Nibelungenring |
| Total hardness | 2,9 mol/m³ | — | — | Single value · Nibelungenring |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Frequent questions about postcode 25336
- How hard is the water in Postcode 25336?
- Stadtwerke Elmshorn publishes a total hardness of 2,2 mol/m³ for the supply zone Köhnholz — that corresponds to 12.3 °dH. The hardness range is a classification under the German Detergents and Cleaning Products Act (soft below 8,4 °dH, medium 8,4 to 14 °dH, hard above that) and not a quality verdict — it indicates how much calcium and magnesium is dissolved in the water. Basis: 01. Dezember 2025, retrieved on 11/07/2026.
- How much nitrate is in the drinking water in Postcode 25336?
- Stadtwerke Elmshorn publishes a nitrate value of 4,2 mg/l for the supply zone Köhnholz. The statutory parametric value is 50 mg/l; the measured value represents 8 % of the parametric value. Basis: 01. Dezember 2025, retrieved on 11/07/2026.
- Who supplies the drinking water in Postcode 25336?
- Stadtwerke Elmshorn. The values shown here come from the supply zone Köhnholz and apply to the water the supplier delivers. What happens between the building connection and the tap — in old lead pipes, for example — is not covered by these analyses; information on that is provided by owners, the health authority or an examination by an accredited laboratory.
General questions — how current the data is, limit of quantification, parametric values, who is behind this site — are answered under Questions & answers.